Police and rescue workers in Niagara County scrambled during an unseasonably nice day Thursday in response to two motorcycle crashes and a boat mishap in Wilson Harbor – all within a half-hour.The most serious crash occurred in the Town of Lockport, when a sport utility vehicle and a motorcycle collided about 12:40 p.m. in the 5900 block of South Transit Road, in front of the Big Lots Plaza.A City of Lockport couple – Lee Rosselli, 65, and his wife, Rose, 50, of Clinton Street – were critically injured in that crash and were taken by Mercy Flight to Erie County Medical Center, state police said. City of Lockport, South Lockport and Wrights Corners firefighters responded, along with troopers.The Rossellis were on the motorcycle, with the husband driving, when it collided with the SUV. The SUV driver was uninjured, troopers said, and the crash remained under investigation late Thursday. Meanwhile, Sanborn Fire Department rescue crews and the Lewiston Police Department handled a motorcycle crash at 12:29 p.m. on Chew Road. The injured man was “up and walking around” following the crash, police said.Officer Travis Maggard said the motorcyclist came around a curve too quickly between Mount Hope and Saunders Settlement roads and lost control, sliding into a ditch. The man, who was not ticketed, suffered minor cuts and scrapes, Maggard said.At 12:20 p.m., boaters trying to help a fellow boater ended up submerged at the Wilson Pier.Sheriff James R. Voutour said two men in a motorboat tried to help a sailboat, which had become grounded at the pier.“The sailboat was running the engine full bore, since they were stuck, and once they came free [the sailboat] catapulted past the motorboat, spinning it around, and started to pull it backwards, which took it right under water,” Voutour said. No injuries were reported.Wilson volunteer firefighters helped sheriff’s deputies aid the boaters. The U.S. Coast Guard and Olcott Volunteer Fire Department were called to remove the overturned boat.